Ive spent a few days going thru a couple of Python tutorials. No
problem until I got to classes. I guess my java mindset is blocking my
vision. I've borrowed another thread's code snippet and cannot explain
the results:
class MyClass:
list = []
myvar = 10
def add(self, x):
self.list.append(x)
self.myvar = x
def printer(self):
print self.list
print self.myvar
a = MyClass()
b = MyClass()
for n in range(20):
a.add(n)
print "list in a:"
a.printer()
print "list in b:"
b.printer()
This produces:
list in a:
list in a:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]
19
list in b:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]
10
WHY do the "class members" list and myvar seem to behave differently?
Given the way that list[] is supposedly shared why doesnt myvar exhibit
the same behavior? It seems that myvar is acting like a true "instance
member". Is this simply because of the underlying types?
TIA
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